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    <title>Estimating Aortic Regurgitation | ParameterZ.com </title>
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<h2 id="title">Estimating Aortic Regurgitant Fraction</h2>
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<table class="zTable" summary="AR Fraction calculator">
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<td class="label"><label for="txtHT">Height (cm):</label></td>

<td><input id="txtHT" type="text" /></td>
</tr>

<tr>
<td class="label"><label for="txtWT">Weight (kg):</label></td>

<td><input id="txtWT" type="text" /></td>
<td id="BSA" class="results" colspan="3"></td>

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    <label for="txtPVC" title="Parasternal Vena Contracta">PVC (cm):</label></td>

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<img src="../img/information.png" class="tooltip" rel="#pvc_info" title="Parasternal Vena Contracta:" alt="Parasternal Vena Contracta:" />
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<label for="txtVTI-retro">VTI of retrograde flow:</label>
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<input id="txtVTI-retro" type="text" />
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<label for="txtVTI-antegrade">VTI of antegrade flow:</label>
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<td id="info" colspan="2">&nbsp;</td>
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<label>Estimated RF:</label>
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<td>&nbsp;</td>

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<p id="pvc_info">
Enter the vena contracta width in centimeters(cm), measured from the parasternal long axis; for multiple jets, enter as a comma separated list, eg., "0.5,0.1,0.1"
</p>
<div id="references" class="references">
<h3>References:</h3>
    <p>
    <span class="title"><a href="http://www.ncbi.nlm.nih.gov/pubmed/20581048">An echocardiographic model predicting severity of aortic regurgitation in congenital heart disease.</a></span>
    <span class="authors">Beroukhim RS, Graham DA, Margossian R, Brown DW, Geva T, Colan SD.</span>
    <span class="journal">Circ Cardiovasc Imaging. 2010 Sep 1;3(5):542-9. Epub 2010 Jun 25.</span>
    </p>
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